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Cisco Nexus 9000 Series NX-OS Release Notes, Release 6.1(2)I2(3)

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Table of Contents

Cisco Nexus 9000 Series NX-OS Release Notes, Release 6.1(2)I2(3)

Contents

Introduction

System Requirements

Supported Device Hardware

Supported Optics

New and Changed Information

New Hardware Features in Cisco NX-OS Release 6.1(2)I2(3)

New Software Features in Cisco NX-OS Release 6.1(2)I2(3)

Installation Notes

Upgrade Instructions

Software Maintenance Upgrade

Limitations

Unsupported Features

VXLAN Features

VXLAN Topology Restrictions

VXLAN ACL Limitations

PVLANs

DHCP

Caveats

Open Caveats—Cisco NX-OS Release 6.1

Resolved Caveats—Cisco NX-OS Release 6.1(2)I2(3)

Related Documentation

Configuration Guides

Other Software Documents

Hardware Documents

Release Notes

Documentation Feedback

Obtaining Documentation and Submitting a Service Request

Cisco Nexus 9000 Series NX-OS Release Notes, Release 6.1(2)I2(3)

Publication Date: June 23, 2014
Part Number: OL-31713-04 D0
Current Release: Release 6.1(2)I2(3)

This document describes the features, caveats, and limitations for Cisco NX-OS Release 6.1(2)I2(3) software for use on the Cisco Nexus 9000 Series switches. Use this document in combination with documents listed in the Related Documentation.

Table 1 shows the online change history for this document.

Table 1 Online History Change

Part Number
Revision
Date
Description

OL-31713-04

A0

June 23, 2014

Created the release notes for Release 6.1(2)I2(3).

B0

July 29, 2014

Added a limitation about configuring a FEX with speed 100/full-duplex.

C0

August 29, 2014

Added the “Software Maintenance Upgrade” section.

D0

September 15, 2014

Removed N9K-X9636PQ from Table 2 , and updated the “Limitations” section.

Introduction

Cisco NX-OS software is a data center-class operating system designed for performance, resiliency, scalability, manageability, and programmability at its foundation. The Cisco NX-OS software provides a robust and comprehensive feature set that meets the requirements of virtualization and automation in mission-critical data center environments. The modular design of the Cisco NX-OS operating system makes zero-impact operations a reality and enables exceptional operational flexibility.

The Cisco Nexus 9000 Series uses an enhanced version of Cisco NX-OS software with a single binary image that supports every switch in the series, which simplifies image management.

System Requirements

This section includes the following topics:

Supported Device Hardware

Table 2 lists the Cisco Nexus 9000 Series hardware that Cisco NX-OS Release 6.1(2)I2(3) supports.

Table 2 Cisco Nexus 9000 Series Hardware

Product ID
Hardware
Quantity

N9K-C9508

Cisco Nexus 9508 8-slot chassis

1

N9K-C9508-FM

Cisco Nexus 9508 Series fabric module

6

N9K-C9508-FAN

Cisco Nexus 9508 fan trays

3

N9K-X9564PX

Cisco Nexus 9500 Series 48-port, 1-/10-Gbps SFP+ plus 4-port QSFP+ I/O module

Up to 8 in the Cisco Nexus 9508
Up to 4 in the Cisco Nexus 9504

N9K-X9564TX

Cisco Nexus 9500 Series 48-port, 1-/10-Gbps BASE-T plus 4-port QSFP+ I/O module

Up to 8 in the Cisco Nexus 9508
Up to 4 in the Cisco Nexus 9504

N9K-SC-A

Cisco Nexus 9500 Series System Controller Module

2

N9K-SUP-A

Cisco Nexus 9500 Series supervisor module

2

N9K-PAC-3000W-B

Cisco Nexus 9500 Series 3000 W AC power supply

Up to 6 in the Cisco Nexus 9508
Up to 4 in the Cisco Nexus 9504

N9K-C9504

Cisco Nexus 9504 4-slot chassis

1

N9K-C9504-FM

Cisco Nexus 9504 fabric module

6

N9K-C9504-FAN

Cisco Nexus 9504 fan trays

3

N9K-C9396PX

Cisco Nexus 9300 48-port, 1/10 Gigabit Ethernet SFP+ and 12-port, 40 Gigabit Ethernet QSPF switch

1

N9K-C93128TX

Cisco Nexus 9300 96-port, 1-/10-Gbps BASE-T and 8-port, 40 Gigabit Ethernet QSPF switch

1

N9K-M12PQ

Cisco Nexus 9300 uplink module, 12-port, 40 Gigabit Ethernet QSPF

1 (required)

N9K-PAC-650W1

Cisco Nexus 9300 650 W AC power supply, hot air out (red)

2 or less

N9K-PAC-650W-B 1

Cisco Nexus 9300 650 W AC power supply, cold air in (blue)

2 or less

N9K-PAC-1200W2

Cisco Nexus 9300 1200 W AC power supply, hot air out (red)

2 or less

N9K-PAC-1200W-B 2

Cisco Nexus 9300 1200 W AC power supply, cold air in (blue)

2 or less

N9K-C9300-FAN1 1

Cisco Nexus 9300 fan 1, hot air out (red)

3

N9K-C9300-FAN1-B 1

Cisco Nexus 9300 fan 1, cold air in (blue)

3

N9K-C9300-FAN2 2

Cisco Nexus 9300 fan 2, hot air out (red)

3

N9K-C9300-FAN2-B 2

Cisco Nexus 9300 fan 2, cold air in (blue)

3

1.For use with the Cisco Nexus 9396 switch (N9K-C9396PX).

2.For use with the Cisco Nexus 93128 switch (N9K-C93128TX).

For additional information about the supported hardware, see the Cisco Nexus 9508 Switch Site Preparation and Hardware Installation Guide, the Cisco Nexus 9504 Switch Site Preparation and Hardware Installation Guide , and the Cisco Nexus 9300 Series Switch Site Preparation and Hardware Installation Guide.

Supported Optics

Table 3 lists the supported optical components.

Table 3 Transceivers and Cables

Product ID
Transceivers and Cables

FET-10G

FET-10G Fabric Extender transceiver module for MMF, 850-nm wavelength, dual LC/PC connector, 100-m reach with laser-optimized OM3 or OM4 multimode fiber

Note This transceiver is supported only on fabric links from a Cisco Nexus 2000 to a Cisco parent switch.

QSFP-40G-SR4

40GBASE-SR4 QSFP+ transceiver module for MMF, 4-lanes, 850-nm wavelength, 12-fiber MPO/MTP connector

QSFP-40G-CSR4

40GBASE-CSR4 QSFP+ transceiver module for MMF, 4-lanes, 850-nm wavelength, 12-fiber MPO/MTP connector, 300-m reach with OM3 fiber

QSFP-40G-SR-BD

QSFP+ bidirectional transceiver module, duplex multimode fiber, LC duplex connector, 100-m reach with OM3 fiber

QSFP-40GE-LR4

40GBASE-LR4 QSFP+ 40G transceiver module for single mode fiber, 4 CWDM lanes in 1310-nm window muxed inside module, duplex LC connector, 10-km, 40G Ethernet rate only

QSFP-4x10G-AC7M

40GBASE-CR4 QSFP+ to four 10GBASE-CU SFP+ direct attach breakout cable assembly, 7 meter active

QSFP-4x10G-AC10M

40GBASE-CR4 QSFP+ to four 10GBASE-CU SFP+ direct attach breakout cable assembly, 10 meter active

QSFP-H40G-CU5M

40GBASE-CR4 QSFP+ direct-attach copper cable, 5 meter passive

QSFP-H40G-CU3M

40GBASE-CR4 QSFP+ direct-attach copper cable, 3 meter passive

QSFP-H40G-CU1M

40GBASE-CR4 QSFP+ direct-attach copper cable, 1 meter passive

QSFP-H40G-ACU7M

40GBASE-CR4 QSFP+ direct-attach copper cable, 7 meter active

QSFP-H40G-ACU10M

40GBASE-CR4 QSFP+ direct-attach copper cable, 10 meter active

SFP-10G-SR

10GBASE-SR SFP+ module

SFP-10G-LR

10GBASE-LR SFP+ module

SFP-H10GB-CU1M

10GBASE-CU SFP+ cable 1 meter

SFP-H10GB-CU3M

10GBASE-CU SFP+ cable 3 meter

SFP-H10GB-CU5M

10GBASE-CU SFP+ cable 5 meter

SFP-H10GB-ACU-7M

Active Twinax cable assembly, 7 meter

SFP-H10GB-ACU-10M

Active Twinax cable assembly, 10 meter

GLC-T

1000BASE-T SFP

GLC-SX-MM

GE SFP, LC connector SX transceiver

GLC-LH-SM

GE SFP, LC connector LX/LH transceiver


Note For the current release, if you are using the four 10G breakout cables with a Cisco Nexus 9000 Series switch, all ports on the I/O module must be set to breakout mode. A maximum of three l/O modules can be placed in breakout mode.


New and Changed Information

This section lists the new and changed features in Release 6.1(2)I2(3), and includes the following topics:

New Hardware Features in Cisco NX-OS Release 6.1(2)I2(3)

The Cisco NX-OS Release 6.1(2)I2(3) supports the following Cisco Nexus Fabric Extender (FEX) modules in the Cisco Nexus 9396 switch:

  • N2224TP
  • N2248TP, N2248TP-E
  • N2232TM
  • N2232PP
  • B22HP

Each Cisco Nexus 9396 switch can support up to six FEXs in a straight-through topology. The FEXs can be used in Active/Standby and Active/Active modes and in a Host vPC.

New Software Features in Cisco NX-OS Release 6.1(2)I2(3)

There are no new software features in Cisco NX-OS Release 6.1(2)I2(3).

Installation Notes

Only one software image (called nx-os) is required to load the Cisco NX-OS operating system. This image runs on all Cisco Nexus 9000 Series switches. For installation instructions, see the Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide.

Upgrade Instructions

To perform a software upgrade, follow the installation instructions in the Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide.

Software Maintenance Upgrade

If you perform a software maintenance upgrade (SMU) and later upgrade your device to a new Cisco NX-OS software release, the new image will overwrite both the previous Cisco NX-OS release and the SMU package file.

For more information about software maintenance upgrades, see the “Performing Software Maintenance Upgrades” section in the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide.

Limitations

This section lists limitations related to Cisco NX-OS Release 6.1(2)I2(3).

  • The uplink module should not be removed from a Cisco 9300 switch that is running Cisco NX-OS Release 6.1(2)I2(3). The ports on the uplink module should be used only for uplinks.
  • The N9K-M12PQ GEM module front panel ports do not support Auto negotiation with copper cables. Manually configure the speed on the peer switch.
  • The PortLoopback and BootupPortLoopback tests are not supported.
  • The ASIC Memory-NS test is not applicable for the N9K-X9636PQ line card and will be removed in future releases for the N9K-X9636PW line card. The test is also shown incorrectly for the N9K-X9636PQ line card. The test is applicable only for the N9K-X9564PX and N9K-X9564TX line cards.
  • 802.1Q user-priority tagged frames (VLAN 0 with a 802.1p CoS value in the VLAN tag) are dropped on NS access ports on TOR switches.
  • An NS trunk port sends out tagged packets on the native VLAN of the port. Normally, untagged packets are sent on the native VLAN.
  • On the Cisco Nexus 9500 Series switches with the N9K-X9636PQ and N9K-X9636TX line cards, there is no support for PFC.
  • If you configure the FEX with speed 100/full-duplex and you do not explicitly configure the neighboring device with speed 100/full-duplex, the data packet traffic does not pass properly even though the link appears to be “up.”

no speed: Autonegotiates and advertises all speeds (only full duplex).

speed 100: Does not autonegotiate; pause cannot be advertised.The peer must be set to not autonegotiate (only 100 Mbps full duplex is supported).

speed 1000: Autonegotiates and advertises pause (advertises only for 1000 Mbps full duplex).

Unsupported Features

This section lists features that are not supported in the current release.

VXLAN Features

This section lists VXLAN features that are not supported.

  • VXLAN routing is not supported.

The default Layer 3 gateway for VXLAN VLANs should be provisioned on a different device.

  • Switch virtual interface (SVI) is not supported on VXLAN VLANs.
  • VXLAN Layer 3 uplinks are not supported on a nondefault virtual routing and forwarding (VRF) instance.
  • Switched Port Analyzer (SPAN) Tx for VXLAN traffic is not supported for the access to the network direction.
  • RACLs are not supported on Layer 3 uplinks for VXLAN traffic. Egress VACLs cannot be used on decapsulated packets in the network-to-access direction on the inner payload. As a best practice, use PACLs/VACLs for the access-to-network direction.
  • QoS classification is not supported for VXLAN traffic in the network-to-access direction.
  • The QoS buffer-boost feature is not applicable for VXLAN traffic.
  • Access control list (ACL) and quality of service (QoS) for VXLAN traffic in the network-to-access direction is not supported.
  • There is no uplink SVI support. As a best practice, use the Layer 3 port-channel uplinks/equal cost multi path (ECMP) uplinks instead.
  • There is no native VLAN support for VXLAN. All traffic on VXLAN Layer 2 trunks need to be tagged.
  • Consistency checkers are not supported for VXLAN tables.
  • Just one network virtualization edge (NVE) interface is allowed on the switch.
  • Because the NVE (VXLAN) process is not restartable, patching support is not supported for VXLAN.
  • Per-VNI statistics and per-VTEP statistics are not supported. Only aggregate statistics are available.
  • vPC type-1 consistency checkers are not supported for VXLAN configurations.
  • Dynamic re-IP of an NVE tunnel is not supported. Tunnels must be shut down prior to live IP address changes.

VXLAN Topology Restrictions

  • A device cannot be a VXLAN gateway mode (vxlan-vlan flows) and a VXLAN bridging mode (vxlan-vxlan flows) for the same multicast groups, which are also called the bud-node topology. As a best practice, use the device as either a bridging device or a gateway device, but not both.
  • Due to bud node restrictions, a VXLAN tunnel endpoint (VTEP) cannot reach the rendezvous point (RP) through another VTEP. Because of this limitation, there can be no direct Layer 3 links between two VTEPs, unless one of the VTEPs is the RP.

VXLAN ACL Limitations

The following ACL related features are not supported:

  • Ingress router access control list (RACL) that is applied on an uplink Layer 3 interface that matches on the inner or outer payload in the network-to-access direction (decapsulated path)
  • Egress RACL that is applied on an uplink Layer 3 interface that matches on the inner or outer payload in the access-to-network direction (encapsulate path)
  • Egress VACL for decapsulated VXLAN traffic

We recommend that you use a port access control list (PACL)/VACL on the access side to filter out traffic entering the overlay network.

PVLANs

Private VLANs (PVLANs) are not supported.

DHCP

DHCP subnet broadcast is not supported.

Caveats

This section includes the following topic:

Open Caveats—Cisco NX-OS Release 6.1

Table 4 lists the open caveats in the Cisco NX-OS Release 6.1(2)I2(3) release. Click the Bug ID to access the Bug Search tool and see additional information about the bug.

Table 4 Open Caveats in Cisco NX-OS Release 6.1(2)I2(3)

Bug ID
Description

CSCui54272

The Link Pause feature is not supported on the Cisco Nexus 9500 Series devices.

CSCuj51631

DHCP relay to a subnet broadcast address does not work.

CSCul18670

The show license usage command shows the incorrect license if a valid license is installed over an honor license.

CSCum32811

Multicast packets that are received on Layer 3 to VXLAN groups should not be sent to the CPU.

CSCum36233

The MAC address for the ToR switch does not match IP packets with the mac packet-classify feature.

CSCun00831

During the bootup of a peer switch, native-vlan mismatch syslog messages with CDP might appear.

CSCun01299

The show hardware capacity command should include MAC address table and route table information.

CSCun06345

A VXLAN vPC inconsistency is not detected with mismatched VXLAN configurations.

CSCun14773

Tagged packets in a non-VXLAN VLAN are encapsulated if the trunk port in a native VLAN is a VXLAN VLAN.

CSCun26726

HSRP packet decoding fails with an assertion error.

CSCun30078

After adding a new member to an uplink port channel, an error displays.

CSCun34856

All VLANs are suspended if one has a QoS policy but the TCAM is not configured.

CSCun69596

Unicast traffic still goes after out after the VNI configuration is removed.

CSCun69596

NS 40G access port drops cause packet flooding.

CSCun87017

NS 40G access port drops cause packet flooding.

CSCuo68827

Following a vPC peer reload, a synced MAC address is missing in hardware.

CSCuo86036

Spurious error messages appear when a MCT port-channel member is shut.

CSCup28117

The output of the show hardware capacity forwarding command for max-host-route entries is incorrect.

CSCup32728

An ACL or source VLAN on a SPAN session affects traffic on other sessions.

CSCup35239

The Ethanalyzer does not see packets that egress on a virtual interface.

CSCup36169

The show queuing interface command returns an error for an internal interface.

CSCup55774

No drop counters are displayed when a FEX HIF is congested.


Resolved Caveats—Cisco NX-OS Release 6.1(2)I2(3)

Table 5 lists the resolved caveats in the Cisco NX-OS Release 6.1(2)I2(3) release. Click the Bug ID to access the Bug Search tool and see additional information about the bug.

Table 5 Resolved Caveats in Cisco NX-OS Release 6.1(2)I2(3)

Bug ID
Description

CSCug73220

Storm control counters are not working correctly on Cisco Nexus 9000 Series switches.

CSCuj57404

The DLB configuration should be rejected if PFC is configured.

CSCun06345

A VXLAN vPC inconsistency is not detected with mismatched VXLAN configurations.

CSCun26726

HSRP packet decoding fails with an assertion error.

CSCun30078

After adding a new member to an uplink port channel, an error displays.

CSCun34824

After entering the clear ip route command, VXLAN tunnels are not programmed correctly and traffic is silently dropped.

CSCun34856

All VLANs are suspended if one has a QoS policy but the TCAM is not configured.

CSCun69596

Unicast traffic still goes after out after the VNI configuration is removed.

CSCun76810

Configuring NTP on a Cisco Nexus 9000 Series switch causes a onep lost connection.

CSCuo25060

The IPv4/IPv6 forwarding for the VRF all consistency checker times out.

CSCuo34594

The Layer 2 MAC address consistency checker fails with multicast MAC addresses.

Related Documentation

The entire Cisco Nexus 9000 Series NX-OS documentation set is available at the following URL:

http://www.cisco.com/c/en/us/support/switches/nexus-9000-series-switches/tsd-products-support-series-home.html

Configuration Guides

Cisco Nexus 2000 Series NX-OS Fabric Extender Software Configuration Guide for Cisco Nexus 9000 Series Switches

Cisco Nexus 9000 Series NX-OS Fundamentals Configuration Guide

Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide

Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide

Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide

Cisco Nexus 9000 Series NX-OS Multicast Routing Configuration Guide

Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide

Cisco Nexus 9000 Series NX-OS Security Configuration Guide

Cisco Nexus 9000 Series NX-OS System Management Configuration Guide

Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide

Cisco Nexus 9000 Series NX-OS Verified Scalability Guide

Cisco Nexus 9000 Series NX-OS VXLAN Configuration Guide

Other Software Documents

Cisco Nexus 7000 Series and 9000 Series NX-OS MIB Quick Reference

Cisco Nexus 9000 Series NX-OS Programmability Guide

Cisco Nexus 9000 Series Software Upgrade and Downgrade Guide

Cisco Nexus 9000 Series NX-OS System Messages Reference

Cisco Nexus 9000 Series NX-OS Troubleshooting Guide

Cisco NX-OS Licensing Guide

Cisco NX-OS XML Interface User Guide

Hardware Documents

Cisco Nexus 9396 Switch Site Preparation and Hardware Installation Guide

Cisco Nexus 93128 Switch Site Preparation and Hardware Installation Guide

Cisco Nexus 9504 Switch Site Preparation and Hardware Installation Guide

Cisco Nexus 9508 Switch Site Preparation and Hardware Installation Guide

Release Notes

Cisco Nexus 9000 Series FPGA/EPLD Upgrade Release Notes

Cisco Nexus 9000 Series NX-OS Release Note s

Documentation Feedback

To provide technical feedback on this document, or to report an error or omission, please send your comments to nexus9k-docfeedback@cisco.com. We appreciate your feedback.

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